Adjustable lamp



FIG. 1 is a front elevational view of an adjustable lamp showing my new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a fragmentary opposite side elevational view thereof; the gelescoping supports and reflectors omitted for convenience of illustration;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a adjustable lamp, or similar article substantially as shown and described. 